Vacuum cleaner



FIG. 1 is a front and right-side perspective view of a vacuum cleaner showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof; and,

FIG. 6 is a top view thereof.

The broken lines are shown for the purpose of illustrating unclaimed portions of the vacuum cleaner and form no part of the claimed design. 

CLAIM The ornamental design for a vacuum cleaner, as shown and described. 